JP2827208B2 - Hot water heating system for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]   The present invention relates to cooling of an engine, such as immediately after starting the engine.
For vehicles that can heat the cabin when the water temperature is low
The present invention relates to a hot water heating device. [Conventional technology]   Generally, in a vehicle heating device, the cooling water of the engine is heated.
A hot water heating device as a source is often used.   However, this hot water heating system is
Later, the engine cooling water temperature is low,
Heating was not possible.   Therefore, a hot water heating system that solves the above problems
For example, see, for example, Nippon Denso Public Technical Report No. 27-110 (
Equipped with a hot water supply device as disclosed in
There is something.   This hot water supply device, as shown in the schematic diagram of FIG.
Outflow channel 101 and inflow of insulated tank 100 insulated from the outside
Road 102 connects upstream and downstream of hot water heater 103,
The first hot water circulation path between the engine 104 and the hot water heater 103 (actual
105), and insulated tank 100 and hot water heating
Cuts the second hot water circulation path (indicated by a dotted arrow) 106 with the heater 103
The switching means 107 for replacement and the hot water in the insulated tank 100
A pump 108 for supplying the hot water heater 103 was provided.
Things.   And a hot water type heating device equipped with this hot water supply device
Indicates that the cooling water temperature of the engine 104 is low immediately after starting the engine.
The second hot water circulation path 106
Select the hot water stored in the insulated tank 100 using the hot water system.
It is supplied to the heater 103, and thereafter, the cooling water temperature of the engine 104 rises.
Circulates through the insulated tank 100 and the hot water heater 103 until
And heat the cabin. Then, the engine 104
When the recirculating water temperature rises, the switching means 107 causes the second temperature
Switch the hot water circuit from the water circuit 106 to the first hot water circuit 105
The vehicle interior is heated by the cooling water of the engine 104.
Things. [Problems to be solved by the invention]   However, according to the technology described above, the first hot water circulation path 105
To switch between the second hot water circulation path 106 and the
Also requires two switching means 107 and a heat insulating tank.
For supplying the cooling water in the heater 100 to the hot water heater 103.
Amplifier 108 is required.   As a result, in the conventional hot water supply device, a plurality of switching means
Manufacturing cost by installing 107 and mounting pump 108
Has a problem that the cost is high.   The present invention has been made in view of the above circumstances.
The goal is to keep manufacturing costs of hot water supply equipment low.
Another object of the present invention is to provide a hot water heating device for a vehicle. [Means to solve the problem]   According to the present invention,   A water-cooled engine,   Heats the surrounding air by receiving cooling water from the engine
A hot water heater   Supplying cooling water from the engine to the hot water heater
Supply piping   The cooling water radiated by the hot water heater is supplied to the engine
Return piping to return to   A hot water supply device connected to the supply pipe,   This hot water supply device   The cross-sectional shape is circular, and a predetermined amount of cooling water is kept inside.
And a heat-insulating tank   When the cooling water temperature is below the specified value, the supply pipe is closed.
Open the supply pipe when the cooling water temperature is equal to or higher than a predetermined value.
A temperature on-off valve,   One end is connected to the supply pipe upstream of the thermal on-off valve
The other end is open to the bottom in the insulated tank, the
A flow that allows cooling water to flow into the adiabatic tank from the supply pipe
Entry and   One end is connected to the above-mentioned supply pipe downstream of the temperature-type on-off valve.
And the other end is inserted into the insulated tank through a substantially central portion.
Opening in the upper part of the insulated tank,
An outflow passage for allowing cooling water to flow out to the supply pipe,   The temperature type provided in the inflow channel or the outflow channel.
When the on-off valve closes the supply pipe,
Cooling water that flows out for a predetermined time from the start of flowing out
And a valve mechanism that allows the flow to flow out at a low flow rate.
The technical means of providing is adopted. [Action and Effect of the Invention]   According to the present invention, the engine
If the cooling water temperature is lower than the specified value, the temperature-operated on-off valve supplies
Close the plumbing. As a result, the temperature flowing out of the engine
Low cooling water passes through the inflow channel to the bottom in the insulated tank
Flows in and stored in the insulated tank with the inflow of the cooling water.
The high-temperature cooling water that has been
Flows out of the outlet channel that opens at the top of the
To the hot water heater. At this time,
Is controlled by the valve mechanism provided in the outflow passage.
For a predetermined time from the start of discharge, high-temperature cooling water flows out at a large flow rate.
After that, it flows out at a small flow rate.   On the other hand, when the temperature of the engine
The on-off valve opens the supply pipe to allow the flow from the engine to flow.
The discharged high-temperature cooling water passes through the supply pipe and is heated with hot water
Supplied to the vessel.   As described above, in the present invention, the supply and distribution are performed according to the temperature of the cooling water.
Conventionally, a temperature-operated on-off valve that opens and closes the pipe has been adopted.
Control multiple switching means and the switching means
There is no need to provide a control device for controlling
The hot water circuit can be switched only by closing the valve.   Also, depending on the outflow pressure of the cooling water discharged from the engine,
The cooling water in the insulated tank can be supplied to the hot water heater.
As a result, the conventionally used pump can be eliminated. these
As a result, the cost of hot water supply equipment can be reduced.
You.   Furthermore, when starting the vehicle, the high-temperature cooling water in the insulated tank
Can be quickly sent to the hot water heater,
Becomes possible. After a lapse of a predetermined time, cooling with a small flow rate
Since only water flows out, the engine cooling water rises sufficiently.
Until it warms, only the warm water stored in the insulated tank
There is an effect that heating can be performed. [Example]   Next, a hot water heating device for a vehicle according to the present invention is shown in FIG.
A description will be given based on examples.   FIG. 1 is a schematic diagram of a hot water heating device mounted on a vehicle, and FIG.
Figure 2 is a cross-sectional view of the hot water supply device that constitutes the hot water heating device
It is.   The heating device of the present embodiment is equipped with a water-cooled engine 1.
Temperature of the vehicle 2 using the cooling water of the engine 1 as a heat source.
The water heating device 3 is adopted.   As shown in FIG. 1, the hot water type heating device 3
Upstream of the air conditioning duct 4 for sending air inward,
Inside air inlet 5 for circulating vehicle interior air, and suction
Outside air inlet for taking in outside air through the inlet duct 6
7 is open. And the inside air inlet 5 and the outside air
One of the inlets 7 is provided by an inside / outside air switching damper 8.
To be closed.   In the air conditioning dust 4, the air conditioning duct 4
Blower 9 for generating air flow inside, refrigerant of refrigeration cycle
Cooler 10 consisting of an evaporator and cooling water of engine 1 as heat source
Hot water heater 11 (hereinafter referred to as heater
Are arranged in order, and the air flow path passing through the heater 11
In parallel, a bypass passage 12 that bypasses the heater 11 is formed.
Has been established. The amount of air passing through the heater 11 and the
The amount of air passing through the passage 12 is defined as the air mix damper.
Adjusted by 13.   The air adjusted by the air mix damper 13 blows
Ventilation from the opening selected by the outlet switching damper 14
Blows from each outlet 16 opening into the vehicle cabin through duct 15
Will be issued.   The engine 1 of the vehicle 2 is a water jar of the engine 1.
Cooled by cooling water flowing through a ket (not shown)
It is. The cooling water heated by cooling the engine 1 is supplied to the vehicle
2 to the radiator 17 located at the front (left side in FIG. 1).
The cooling fan 18 when passing through the radiator 17
C which is cooled by the wind and driven by the engine 1
The operation of the water pump 19 causes the engine 1
Into the jacket and repeat the cycle.   The cooling water is used for a while after the engine 1 starts,
Cooling water temperature is installed near the outlet of the water jacket
Temperature of the opened thermostat (not shown)
Does not flow to the radiator 17 until the engine 1
Circulating tar jacket. After that, the cooling water temperature
When the thermostat valve opening set temperature reaches, for example, 88 ° C
The thermostat opens and the heated cooling water is supplied to the radiator
It flows into 17 and is cooled.   From the cooling water circulation path described above,
Cooling water is supplied to the heater 11
To return the cooling water radiated at 11 to the engine 1,
The supply pipe 20 and the return pipe 21
Connected by   Power is supplied to the supply pipe 20 upstream of the heater 11.
A solenoid valve 22 is provided which opens at the moment. Because of this,
Close the solenoid valve 22 in summer when heating inside is not required.
By doing so, the cooling water does not flow to the heater 11 and the cooling water is
It can be used only for cooling the gin 1.   The supply pipe 20 connecting the engine 1 and the heater 11 has an electromagnetic
On the upstream side of the valve 22, a hot water supply device 23 of the present invention is provided.
Have been.   The hot water supply device 23 is a heat insulating tank 2 that insulates external heat.
4, the inflow for supplying cooling water into this insulated tank 24
Drain the cooling water kept in the channel 25 and the insulated tank 24
Outflow channel 26 for bypassing the above-mentioned insulated tank 24
There is a bypass 27 connecting the upstream of the channel 25 and the downstream of the outflow channel 26.
The outflow passage 26 has a flow rate adjusting mechanism and a by-pass
The path 27 serves as opening / closing means for the bypass 27 of the present invention.
A bypass on-off valve (temperature-based on-off valve) 28 is provided.
In this hot water supply device 23, the bypass path 27 is supplied and distributed.
It is configured to form part of the tube 20.   The insulated tank 24 of the hot water supply device 23 is as shown in FIG.
In order to minimize the surface area,
It has a double structure consisting of an inner wall 29 and an outer wall 30 made of steel. What
A vacuum between the inner wall 29 and the outer wall 30 is maintained like a thermos.
I'm dripping.   This insulated tank 24 has a capacity of 1.8 liters,
The heat retention performance of the cooling water when the vehicle 2 is traveling
The temperature is usually about 88 ° C, and the cooling water at about 88 ° C is
If the temperature is kept in the air at 24 ° C,
Even if left overnight, it can be kept at about 80 ° C.   The inner wall 29 is opposed to the spherical outer wall 30 of the heat insulating tank 24.
Is spherical except at the center of the bottom (lower side in Fig. 2).
And the central part at the bottom faces the inside of the insulated tank 24
Thus, the conical concave portion 31 is formed.   The insulated tank 24 has an inflow pipe that forms a part of the inflow path 25.
32 and an outflow pipe 33 constituting a part of the outflow passage 26 are attached.
Have been. The inflow pipe 32 and the outflow pipe 33 are, for example, stainless steel.
Made by welding or brazing
You.   The inflow pipe 32 is formed by spirally turning inside the conical recess 31.
And one end of the outer wall 30 extends from the bottom of the heat insulating tank 24.
Penetrates and opens outside the insulated tank 24, the other end penetrates the inner wall 29
It is open at the bottom in the heat insulating tank 24. In addition, inflow
The other end of the tube 32 penetrates the inner wall 29 as shown in FIG.
After being bent at the bottom in the heat insulating tank 24,
Can be assembled and removed in an insulated tank
In addition, an injection pipe 32a is formed.   By providing the inflow pipe 32, the cooling water in the heat insulating tank 24
Heat is transferred to the outside through the inflow pipe 32, resulting in heat loss.
You. Therefore, to minimize heat loss due to heat transfer,
As described above, in the vacuum region having a low thermal conductivity, the inflow pipe 32 is connected.
The pipe is formed in a spiral shape and has a long pipe length.   The outflow pipe 33 is a hollow part of the inflow pipe 32 that spirals.
Is formed in a straight line, one end of which is
Through the outer wall 30 and open to the outside of the heat insulating tank 24,
Penetrates the upper part of the inner wall 29 formed as a conical recess 31
It is open at the top inside the heat insulating tank 24.   The inner wall 29 has a conical concave shape near the upper part in the heat insulating tank 24.
By forming the part 31, the
The length of the outflow pipe 33 can be made longer, and is the same as that of the inflow pipe 32.
In this way, the heat loss due to the outflow pipe 33 can be kept low.
You.   In addition, the inflow pipe 32 and the outflow pipe 33 and the
The penetrating part with the wall 30 and the inner wall 29 is bonded or
It is hermetically sealed by welding or the like.   The above-mentioned heat-insulating tank 24 has its outer wall 30 covered with a bracket.
By screwing into the engine room of vehicle 2 via 34
Fixed.   One end of the inflow pipe 32 attached to the insulated tank 24
Inflow constituting the upstream side of the inflow path 25 via the input hose 35
One end of the outflow pipe 33 is connected to the outflow hose 37 through the passage 36.
Through the outflow passage 38 that forms the downstream side of the outflow passage 26
ing. As a result, the inflow passage 25 is connected to the inflow pipe 32 and the injection pipe.
32a, inflow hose 35, and inflow passage 36
The outflow passage 26 is provided with an outflow pipe 33, an outflow hose 37, and an outflow
It is composed of a passage 38. And on the inflow passage 36
The flow end communicates with the upstream of the above-mentioned bypass passage 27, and
The downstream end of the passage 38 is provided in communication with the downstream of the bypass passage 27.
Have been.   In the present embodiment, the inflow passage 36, the outflow passage 38, and the
A joint 39 that integrally forms the path 27 is provided.
The connection 39 is used with the supply pipe 20 interposed.   When connecting the joint 39 to the supply pipe 20,
Extending through the joint 39 to extend both ends of the
One end (right side in FIG. 2) of the cooling water passage 40
Connected to the supply pipe 20 on the engine 1 side via
It is connected to the supply pipe 20 on the heater 11 side.   The cooling water flowing into the bypass passage 27 is
Bypass valve that opens and closes the bypass 27 according to the temperature of the air
28 are provided.   The bypass opening / closing valve 28 is a thermowac connected to the valve stem 42.
A spherical valve 44 is integrally formed with the
(The left side in FIG. 2) is a support portion 45 protruding into the bypass path 27.
It is fixed to.   This bypass on-off valve 28 is supplied from the engine 1
When the cooling water temperature is about 45 ° C or less, the spherical valve 44
By contacting the valve seat 47 with the force, the bypass path 27
Is closed and the temperature of the cooling water supplied from the engine 1 is about 45 ° C or less.
In the lower position, the thermo wax 43 connected to the stem 42 extends.
And a spherical valve 44 integrally molded with the thermo wax 43
By separating from the valve seat 47 against the urging force of the
The path 27 is opened.   As a result, the temperature of the cooling water supplied from the engine 1 becomes approximately
When the temperature is below 45 ° C, the bypass on-off valve 28
When the cooling water supplied from the engine 1 is closed,
36, the inflow hose 35, and the inflow pipe 32,
It is supplied into the heat insulating tank 24 from the IP 32a. Also,
When the cooling water supplied from gin 1 is about 45 ° C or higher,
When the bypass valve 27 is opened by the bypass valve 28, the engine 1
Cooling water supplied from the cooling water passage 4
0, and is supplied to the heater 11 via the supply pipe 20.   The flow control mechanism provided in the outflow passage 38 has a flow control valve
48 and a constant flow control valve 49 which is a resistance means of the present invention.
Have been.   The flow control valve 48 is used for cooling water kept warm in the heat insulating tank 24.
A certain amount in a short time (for example, about 3 to about 6 seconds)
It is provided for.   In this embodiment, the supply from the flow control valve 48 to the heater 11
Assuming that the amount of low-temperature cooling water remaining in the pipe 20 is about 300 cc
ing.   This flow control valve 48 branches on the upstream side of the outflow passage 38
It has two passages 50 and 51, and one passage 50 has the other passage 50.
The throttle section 52 is formed so that the aperture ratio with the path 51 is 1: 9.
Further, downstream of the throttle section 52, it functions as a cylinder.
Volume 53 is provided. The other passage 51 has a volume
The outer periphery of 53 is formed in an annular shape, and the volume is
It communicates with the inside of the stacking section 53. The lower end of the volume 53 is a valve seat
54 is formed and communicates with the downstream side of the bypass path 27 through the flow path 55.
Through.   The open end of the flow path 55 on the bypass path 27 side is
Opened upstream.   Inside the volume 53, a resin hollow ball 56 having a specific gravity of about 0.8 is provided.
The cooling water provided in the volume 53
It floats on the upper part in the part 53. Newly flows into the volume 53
The hollow ball 56 is pushed down by the cooling water
By closing the seat 54, the cooling water is supplied to the two passages 50,
From 51, it is prevented from flowing directly into the bypass path 27.   The volume section 53 is formed so that about 30 cc of cooling water can flow in.
I have. For this reason, about 30 cc of cooling water flows into the volume 53.
The hollow ball (resistor) 55 is pushed down and the valve
By the time the seat 54 is closed, one passage 50 and the other
That the opening ratio with the passage 51) is set to 1: 9
Approximately 270 cc of cooling water flows into the other passage 51,
Approximately 300 cc of cooling water flows from the insulated tank 24 to the flow control valve 48
Through the bypass passage 27 to the downstream.   The constant flow control valve 49 is cooled by the flow control valve 48 to about 300 cc.
After draining the water, a constant flow rate (for example, about 0.5 l
Torr) of cooling water.   The constant flow control valve 49 has a volume formed in the joint 39.
A cone-shaped adjusting rod 58 formed in the portion 57;
A hollow valve body 59 arranged to be fitted to 58;
And a spring 60 for supporting the valve element 59.
In the volume part 57, the upper part is connected via the first communication passage 61.
It communicates with the other passage 51, and through a second communication passage 62 at a lower portion.
It joins the flow path 55 and communicates with the bypass path 27.   As a result, after the flow control valve 48 is closed,
The supplied cooling water forms a gap between the valve body 59 and the adjusting rod 58.
And accumulates in the volume 57 and reaches the opening of the second communication passage 62.
At the same time, the water flows out into the bypass passage 27 through the second communication passage 62.
It is.   The above constant flow control valve 49 flows into the constant flow control valve 49.
The valve body 59 moves according to the pressure of the cooling water
Thus, the gap between the valve element 59 and the adjusting rod 58 is adjusted. This
Engine speed (revolutions per unit time)
Changes in the discharge pressure of the water pump 19
Cooling at almost constant flow rate (about 0.5 liters per minute)
Can drain water.   Normally, about three minutes after the start of the engine 1, the engine 1
The cooling water temperature rises to around 45 ° C, making it possible to heat the cabin.
You.   For this reason, the cooling water kept warm in the heat insulating tank 24 is heated.
3 minutes after the start of the engine 1,
If all the cooling water is allowed to flow out of the insulated tank 24,
good.   Therefore, from the inside of the heat insulating tank 24, the flow control valve 48
After flowing out about 300cc of cooling water, the constant flow control valve 49
If you let out about 0.5 liters of cooling water per minute,
1.8 liters of cooling water stored in the insulated tank 24
Will all flow out in about 3 minutes.   Next, the operation of the present embodiment will be described.   Water pump 19 is driven by starting engine 1.
The cooling water is discharged from the engine 1 toward the heater 11.
It is. The discharged cooling water is configured as part of the supply pipe 20.
Flows into the formed bypass path 27. At this time, the temperature of the cooling water
Temperature (below 45 ° C), the bypass on-off valve 28 is closed
The bypass 27 is closed. This allows the cooling water to
Inflow passage 36, inflow hose 35, and
Through the injection pipe 32a and the insulated tank 2
4 flows into the bottom.   Insulated tank 24 must be
Filling 1.8 liters of cooling water keeps high temperature (about 80 ℃)
New cooling water will flow in
Therefore, high-temperature cooling water and low-temperature cooling water do not mix.
The cooling water kept in the heat insulating tank 24
Out of the heat insulating tank 24 from the outlet pipe 33 opened at the top inside the tank 24
Flows into   The outflowing cooling water is joined via the outflow hose 37.
Flows into the outflow passage 38 formed in the port 39.   In the outflow passage 38, a flow control valve provided in the outflow passage 38
48 branches into one passage 50 and the other passage 51 and flows.
Here, one passage 50 has an opening ratio with the other passage 51.
Whether the narrowed portion 52 is formed so as to be 1 to 9
The two passages 50 and 51 have a flow rate ratio according to the opening ratio.
Cooling water flows at the same time.   The cooling water flowing into one of the passages 50 passes through the throttle section 52
After that, push down the hollow ball 56 placed in the volume 53
While the hollow ball 56 closes the valve seat 54
It flows into the stacking section 53. During this time, the cooling air flowing through the other passage 51
After flowing into the volume 53 at the bottom of the volume 53,
Passes through the opening of the lube sheet 54 and flows out to the bypass 27
Then, it is supplied to the supply pipe 20 on the heater 11 side. And hollow
One of the passages until the ball 56 closes the valve seat 54
Approximately 300 cc of cooling water is supplied through 50 and the other passage 51.
Supply pipe 20 on the heater 11 side from the heat insulation tank 24 in seconds to 6 seconds.
Leaks to   As a result, the supply distribution from the flow control valve 48 to the heater 11
The low-temperature cooling water remaining in the pipe 20 passes through the heater 11
To the return pipe 21, and
Supplied from the inside of the insulated tank 24, just upstream of the heater 11
High-temperature cooling water is carried.   After that, when the flow control valve 48 is closed, the heat insulating tank 24 is closed.
High-temperature cooling water flowing out of the
It flows to the flow control valve 49. With constant flow control valve 49, about 0.5 per minute
Liter is regulated to a constant flow rate.
After flowing out to the Ipass path 27, the heater 11 is supplied through the supply pipe 20.
Supplied to   Note that the content of the heat insulating tank 24 is 300 cc
Water at 80 ° C at a rate of about 0.5 liters per minute
By supplying to the heater 11, for example, about 100m per minute^Three
About 45 ° C hot air for about 3 minutes
You.   Initially, the cooling water kept at a high temperature in the insulated tank 24
, 300 cc of cooling water flowed out through the flow control valve 48
After that, all flow out in about 3 minutes through this constant flow control valve 49
Then, it is supplied to the heater 11. And in the heat insulation tank 24
Is filled with new cooling water supplied from the engine 1.
You.   During this time, the temperature of the cooling water discharged from the engine 1
The temperature of the cooling water that gradually rises and reaches the bypass on-off valve 28
Is 45 ° C or higher, the bypass on-off valve 28 opens,
The Ipass 27 is opened. As a result, the engine 1 discharges
The cooling water is passed directly to the heater 11 through the bypass path 27.
Supplied. At this time, the cooling water temperature supplied to the heater 11 is
It drops to around 45 ° C, but does the flow of cooling water increase?
The temperature of the hot air discharged from the heater 11 to about 40 ° C
And it rises as the cooling water temperature rises.   Cooling water discharged from the engine 1 passes through the bypass 27.
When passing, the total pressure of the circulating cooling water
Take it. On the other hand, above the inflow passage 36 communicating with the bypass passage 27
The static pressure of the cooling water passing through the bypass 27
You. For this reason, due to the pressure difference,
Cooling water flows backward in the outflow passage 26 toward the inside of the insulated tank 24
I do. The cooling water flowing backward in the outflow passage 26
Flows into the insulated tank 24 through the outflow pipe 33 opening at the top of the
You.   At this time, the inside of the insulated tank 24 is
Because the low-temperature cooling water is filled, the insulated tank
Cut off from the injection pipe 32a of the inflow pipe 32 opening to the bottom inside 24.
Flow outside heat tank 24, inflow hose 35, and inflow passage
It flows into the bypass 27 via 36.   As a result, the high-temperature cooling water discharged from the engine
Cooling water with a water temperature of 45 ° C or less
They are replaced without mixing, and the inside of the insulated tank
Filled with warm cooling water.   The cooling water flowing out of the bypass passage 27 is discharged from the engine 1.
It is supplied to the heater 11 together with the discharged high-temperature cooling water.   Thereafter, the above operation is repeated until the engine 1 is stopped.
This makes it possible to fill the insulation tank 24 with high-temperature cooling water.
When the engine 1 is started the next day, hot water is supplied to the heater 11.
Can be paid.   As mentioned above, the insulated tank 24 is
Cooling water from the engine 1 to the hot water heater 11 via the road 26
The engine is interposed in the supply pipe 20 that supplies
The pressure of the cooling water discharged from the
The cooling water in the heater 24 can be supplied to the hot water heater 11.
You. For this reason, the pumps used conventionally must be abolished.
Can be.   In addition, the bypass passage 27 is provided by one bypass opening / closing valve 28.
It is possible to switch the cooling water circuit only by opening and closing the
Therefore, it is not necessary to provide a plurality of switching means as in the related art.
No.   As a result, the manufacturing cost of the hot water supply device 23 is kept low.
Can be obtained.   Further, in the present embodiment, the inflow passage 36, the outflow passage 38, and the
And the bypass 27 are integrally formed in one joint 39
Therefore, the joint 39 is interposed in the supply pipe 20 and
Connection 39 and the insulated tank 24 with the inflow hose 35 and
It is only necessary to connect with the outflow hose 37. Therefore, the insulation
Link 24 can be freely selected,
The mountability of the heat insulating tank 24 in the engine room is improved.   3 and 4 show a second embodiment of the present invention.   In the present embodiment, as shown in FIG.
It is formed integrally with a flow rate adjustment mechanism.
You.   This hot water supply device 23 forms a heat insulating tank 24 in a shell shape.
Then, a plurality of holes 63 are opened by the bottom in the heat insulating tank 24.
The provided stop plate (mixing prevention plate) 64 is fixed.
Below the stop plate 64, the bottom of the insulated tank 24 and the stop
It can be moved up and down in the insulated tank 24 with the top plate 64
A suitable flow control valve 65 is provided.   The flow control valve 65 is a component of the flow control mechanism shown in the first embodiment.
A combination of the functions of the flow control valve 48 and the constant flow control valve 49
Therefore, as shown in FIG. 4, three claws 66 and their claws are provided.
A small hole 67 for constant flow outflow is provided inside the
The disc-shaped valve body 68 with the opening is fitted with the small hole 67 of the valve body 68
And an adjusting rod 69 provided to be
You.   The dish-shaped valve element 68 is provided in a free state inside the claw 66.
And the valve body 68 is in a position where it descends and contacts the claw 66
Occasionally, the gap between the claws 66 and the small
The cooling water can be circulated through the holes 67. Also, the valve body 68 has a claw
When located at the top inside the part 66, the gap between the claws 66 is
Closed by the body 68 and adjusted with the small hole 67 of the valve body 68
The gap formed by the rod 69 becomes smaller, and from this gap,
It enables the circulation of about 0.5 liter of cooling water per minute.   The flow control valve 65 is located at the bottom in the heat insulating tank 24.
With a volume of about 300cc between the stop plate 64
You.   The operation of the hot water supply device 23 having the above-described configuration will be described.
And will be described below.   The components having the same functions as those of the first embodiment are the same.
The description will be made with reference numerals.   When the engine 1 is started, the low temperature
Cooling water flows from the bottom of the insulated tank 24 into the insulated tank 24
Enter. At this time, the cooling water flowing into the heat insulating tank 24
The pressure is controlled by the flow regulating valve 65 located at the bottom in the insulated tank 24.
The valve body 68 of the flow regulating valve 65 in the claw 66
Pushed up.   For this reason, the flow regulating valve 65 is provided with the small hole 67 of the valve body 68 and the regulating rod.
Only the gap with 69 is open, and inside the heat insulating tank 24
The cooling water flowing into the
Is pushed up. Also, the flow control valve 65 is pushed up.
The cooling water above the flow control valve 65
Push up to the upper part in the heat insulating tank 24 from the plurality of holes 63 of the plate 64
From the outflow channel 26 opened at the top inside the heat insulating tank 24
It flows out of the heat insulating tank 24 and is supplied to the heater 11.   Push up until the flow control valve 65 contacts the stop plate 64
About 300 cc of cooling water from the insulated tank 24
It has leaked.   Thereafter, when the movement of the flow control valve 65 stops, the shutoff
The flow rate of the cooling water flowing into the
Is controlled. Therefore, it flows out of the insulated tank 24
The flow rate of cooling water is adjusted to about 0.5 liters per minute,
Minutes later, the cooling water kept at a high temperature in the insulated tank 24
All of them flow out and are supplied to the heater 11.   After that, high temperature (about 45 ° C or more) cooling water from engine 1
Is discharged to open the bypass passage 27, and the hot
In addition to supplying recirculated water to the heater 11,
The operation of replacing the cooling water is the same as in the first embodiment.
Therefore, the description is omitted.   As in the present embodiment, the heat insulating tank 24 and the flow rate adjusting mechanism
Hot water supply device by combining and forming integrally
23 can be formed compactly. (Modification)   In the embodiment, the supply distribution from the flow control valve 48 to the heater 11 is provided.
The amount of cooling water remaining in the pipe 20 is illustrated as about 300 cc
Corresponds to the position where the hot water supply device 23 is
The amount of cooling water remaining in the supply pipe 20 changes
Therefore, the volume 53 of the flow control valve 48 is
Internal capacity or opening between one passage 50 and the other passage 51
The ratio may be changed as appropriate.   A constant flow control valve 49 is provided as a resistance means provided in the outflow passage 38.
Used, but simply reduced the passage area to allow cooling water to flow
A fixed aperture with a small amount may be used.   When the hot water supply device 23 is interposed in the supply pipe 20,
By placing it just upstream of the type heater 11,
The illustrated flow control valve 48 may be omitted. Also, flow rate control
By omitting the control valve 48, a resistance means is provided in the inflow passage 25.
In addition, the flow resistance of the inflow channel 25 may be increased.   Depending on the temperature of the cooling water,
The valve mechanism is opened and closed by using a solenoid valve.
It may be opened and closed by control. Or electromagnetic
A water temperature sensor that detects the temperature of cooling water is installed upstream of the valve.
The solenoid valve according to the detected temperature.
Is also good.   In addition, the heat is kept in the heat insulating tank 24 by the flow integrator.
To detect the flow of cooling water that was
You may do it.   After opening the bypass 27, the cooling water in the heat insulating tank 24
To replace the cooling water passing through the bypass 27,
Reverse the outflow channel 26 communicating with the downstream side of the bypass channel 27
After flowing into the insulated tank 24, the pressure of the bypass on-off valve 28
Inflow communicating with the upstream of the bypass 27 using the power loss
It may be allowed to flow into the heat insulating tank 24 from the path 25.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 show a first embodiment of the present invention.
FIG. 1 is a schematic view of a hot water heating device mounted on a vehicle, FIG. 2 is a cross-sectional view of a hot water supply device constituting the hot water heating device,
FIGS. 4 and 5 show a second embodiment of the present invention. FIG. 3 is a sectional view of a hot water supply device, FIG. 4 is an explanatory view of a constant flow control valve, and FIG. It is a schematic block diagram. In the figure, 1 ... engine, 3 ... hot water heating system for vehicle,
11 ... Hot water heater, 20 ... Supply piping, 21 ... Return piping, 23 ... Hot water supply device, 24 ... Insulated tank, 25 ...
Inflow channel, 26 outflow channel, 27 bypass channel, 28 bypass bypass valve (temperature-type on-off valve), 49 constant flow control valve (resistance means), 51 other channel (sub-passage) , 56… Hollow ball (resistor), 64… Stop plate (mixing prevention plate)

Claims (1)

(57) [Claims] A water-cooled engine, a hot water heater for heating surrounding air by receiving a supply of cooling water from the engine, a supply pipe for supplying cooling water from the engine to the hot water heater, and the hot water heating A return pipe for returning cooling water radiated by the heater to the engine; and a hot water supply device connected to the supply pipe. The hot water supply device has a circular cross section and a predetermined amount of cooling water therein. An insulated tank that can keep the heat, and closing the supply pipe when the cooling water temperature is below a predetermined value,
A temperature-type open / close valve that opens the supply pipe when the cooling water temperature is equal to or higher than a predetermined value, one end of which is connected to the supply pipe upstream of the temperature-type open / close valve, and the other end of which opens to the bottom in the heat insulating tank. An inflow path through which the cooling water flows from the supply pipe into the insulated tank, one end of which is connected to the supply pipe downstream of the thermal on-off valve, and the other end of which passes through a substantially central portion in the insulated tank. An outlet opening to the upper part in the heat insulating tank, and an outflow path for allowing cooling water to flow into the supply pipe into the insulated tank, provided in the inflow path or the outflow path, wherein the temperature type on-off valve connects the supply pipe. A valve mechanism for causing the cooling water flowing out of the outflow path to flow out at a large flow rate for a predetermined time from the start of the outflow when closed, and then to flow out at a small flow rate. Heating system. 2. In the heat insulating tank, a mixing preventing plate is provided that partitions the inside of the heat insulating tank into a lower space in which the other end of the inflow path opens and an upper space in which the other end of the outflow path opens. The hot water heating device for a vehicle according to claim 1, further comprising a hole communicating the space and the upper space.